You cannot love someone or something you know very little of. The nation at its root represents a community of people united through certain values. A nation does not become admirable or respectable or lovable just by the dint of being a nation.
If you are to fall in love with something, then the thing has to have a sacredness in it. To love you need something sublime, something sacred, something worth worshiping—nationalism founded on truly Indian values. And what do I mean by Indian values? I am being very specific here. By Indian values I mean the values enshrined in Vedanta.
As long as the youth remain in touch with the essence of the nation, the nation will stay safe. When the youth start losing touch with Vedanta, the nation starts losing its inner security.